Journal of Scientific
& Industrial Research
http://www.niscair.res.in; http://nopr.niscair.res.in Total visitors: 1946 since 30-11-2011 |
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VOLUME 70
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NUMBER 12
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DECEMBER 2011 |
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CONTENTS
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Management & Information Technology |
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1017 |
M
Flota, R Alvarez-Salas, H Miranda, |
In this paper, a nonlinear observer-based controller for a
single-phase active front-end (AFE)
rectifier
is presented to improve power factor with high quality output DC voltage.
Proposed algorithm is based on an Luenberger-like observer and a
passivity-based controller. Closed-loop stability is demonstrated for all
operating ranges using Lyapunov theory. Performance of observer-based
controller is shown by simulation for voltage sag occurrence and abrupt load
changes. |
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S & T and Industrial Research |
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1026 |
A virtual instrument for pulsed electrodeposition: A novel technique
for obtaining graded coatings |
This study presents a computerized virtual
instrument to generate a sequence of current pulses across two electrodes
immersed in an electrolyte. Pulse parameters can be entered from a keyboard.
Amplitude of pulses can be fixed or programmatically varied over the process
period. This system is well suited for developing coatings with graded
physical properties. |
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1029 |
Effect of molasses, cassava starch, and
Arabic gum on mechanical strength of foundry core |
This study presents effects of some local binders on mechanical properties of foundry core to develop a suitable core strength using green compression strength, baked compression strength, permeability and collapsibility tests. Compression strength of baked cores increased with an increase in the quantity of binder added. At 200°C in 1.5 h, compression strength after baking increases as water (%) decreases. It was observed that molasses, cassava starch and Arabic gum could serve as effective binder of commercial production of high foundry core but Arabic gum is preferable. |
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S & T and Industrial Research |
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1033 |
Nutritional and antimicrobial property of
seabuckthorn (Hippophae sp.) seed oil |
This
study presents nutritional and antimicrobial characteristics of seabuckthorn
seed oil, extracted from berries of Hippophae salicifolia (4.3-4.9%)
and H. rhamnoides (4.75-5.25%). Seed oil exhibited
good antimicrobial property (growth inhibition zone diam, 4.0 mm) against Escherichia coli. Thus, owing to high
content of linolenic acid and vitamin E and good antimicrobial property, seed
oil can be exploited in pharmaceutical, cosmetic and nutraceutical
preparations. Seed cake was rich in proteins and minerals and can be used as
animal feed.
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1037 |
Efficacy of non-edible oil seedcakes
against termite (Odontotermes obesus) |
This study evaluates termiticidal potential of
non-edible oil seedcakes (jatropha, karanja, neem and mahua) and
their crude active components (phorbol esters, karanjin, saponins and azadirachtin)
in vitro and in vivo. Cold water extracts of neem cake showed better results
than hot water extracts of same cake and caused 100% mortality of termites in
72 h. Crude karanjin extract induced
83.3% mortality after 2 h in petriplate (diam, 4.5 cm) and 100% after 4 h in
petriplates (diam, 9.5 cm). In vivo,
combination of all cakes was most effective with 1.59% weight loss.
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1042 |
Production and optimization of detergent
compatible thermostable alkaline protease from Bacillus cereus FJ10 |
This
study presents production and
optimization of detergent compatible thermostable alkaline protease from Bacillus cereus FJ10. Identification
of isolate FJ10 that showed maximum growth when allowed to grow for 24 h at
50°C and pH 9.0 with 1% inoculum was confirmed by 16S rRNA gene sequencing.
Proteases yielded maximum activity at 50°C having pH 10.0 and 20% substrate
concentration. B. cereus FJ10 was
partially purified by ammonium sulfate precipitation and dialysis. Both crude
and partially purified enzymes were destained blood spots on cotton fabrics.
Alkaline and thermostable nature of bacterial proteases qualifies them for
detergent formulation.
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S & T and Industrial Research |
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1049 |
Evaluation of PEGylation reaction and
purification of monoPEGylated recombinant human granulocyte colony
stimulating factor |
In
this study, incubation of methoxy polyethylene glycol propionaldehyde
(mPEG-ALD) with recombinant human granulocyte colony stimulating factor
(rh-GCSF) in presence of cyanoborohydride yielded various species of
polyethylene glycol (PEG) conjugated GCSF as detected by size exclusion high
performance liquid chromatography (SE-HPLC).. Further, a process involving
ion exchange and gel filtration chromatography were used to obtain pure
monoPEGylated GCSF. Purified monoPEGylated GCSF was comparable to standard
PEGylated rh-GCSF on NFS-60 cell line, suggesting retained biological
activity of monoPEGylated GCSF. Further, the procedure is warranted for
purification of other monoPEGylated proteins for therapeutic purpose. |
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Energy and Environment |
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1054 |
Preparation of
novel catalyst composition from natural waste for biodiesel production |
This
study presents preparation of a novel, cost effective and recyclable catalyst
from natural waste for production of biodiesel. Novel catalyst composition has been developed using combination of
seashell and eggshell in complexation with transition metal oxide TiO2
to form A-B-O type metal oxide complex, where A is alkaline metal and B is
transition metal. Catalyst
composition has been evaluated and a robust cost effective method for
biodiesel production is proposed.
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Energy and Environment |
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1061 |
Energy optimization in integrated pulp and paper mills with recourse
to environmental benefits |
This
study focuses on energy optimization
in evaporator and digester of integrated pulp and paper mills in India, and
recommends application of 7 effects/plates evaporator in place of 5 effects/plates
normally used. Steam economy resulting from this modification is definitely
more than 7. Pinch technology is found suitable for optimization of
controlled parameters in the digester. Using recommendations, total energy
savings was observed in West Coast Paper Mill (11.74%) and Star Paper Mill
(12.97%). Environmental benefits that will accrue in terms of reductions in
emissions are: SPM, 46464-48664 TPA; SO2, 1045 kg/annum; H2S,
55,020 kg/annum; and CO2, 13612 TPA.
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Waste Treatment and
Utilization
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1070 |
Physicochemical parametric analysis of
paper mill effluent using mixed cultures of bacteria and fungi |
This study used shake flask method to examine effects of pH,
temperature, and duration of incubation on removal efficiency by studying
physicochemical parameters and floc stability in degradation of pulp and
paper mill effluent over 24 h using mixed cultures of bacteria and
fungi. Quadratic models were developed based on high coefficient of
determination (R2) obtained from analysis of variance (ANOVA)
results. Optimal conditions yielded a decrease in chemical oxygen demand
(COD, 70%) and in total suspended solid (TSS, 53%) levels.
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Author-Reader Platform |
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1079 |
Annual Author Index
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1084 |
Annual Keyword Index
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1091 |
Referee Index
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1093 |
Instructions to contributors
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